Tony Jackson said his daughter Amber, who jumped in front of a train, was put under too much pressure by her school

Tony Jackson said he and his wife had had to reassure daughter Amber, 15, who died at Bitterne station last September 1, that whatever she achieved in her GCSEs at Bitterne Park School it would not affect the rest of her life.

He told Winchester Coroner's Court "She felt under a lot of pressure regarding her academic performance at school.

"We felt the pressure from the school was so strong we had to counter it, and say 'don't worry if you don't achieve what you want to achieve (at GCSE), it won't affect the rest of your life.'"

He raised concerns, reported by the Daily Echo yesterday, that Amber and her friends, who cannot be named for legal reasons, were accessing a website that could be said to normalise suicide.

The site, which the Daily Echo is not identifying, has been accessed at Bitterne Park School. "We have serious reservations this is not being addressed (at the school) and there may be more harm for pupils.

"We were disturbed to find the site accessed in school hours and using school equipment," said Mr Jackson.

The Jacksons yesterday saw for the first time photos of their daughter's death. They were shown CCTV images of her final seconds.

Amber suffered a fractured skull when she was struck by the Southampton-Brighton train doing 40mph.

Detective Constable Tony Gittins, of British Transport Police, investigated the death and spoke to Amber's friends.

He said: "Amber wasn't well-liked. She was not directly bullied. Other students made mean comments and laughed at her."

The inquest heard that Amber and friends had exchanged messages on Facebook including many that mentioned suicide. Mr Jackson said there had been some "nasty messages" from one girl on August 31.

DC Gittins said the train driver Charles Arnold was doing about 40mph because of speed restrictions. "The female ran straight at me. She took two or three steps and jumped in the air in the path of the train."

He added: "He (the driver) didn't have time to do anything, sound the horn, let alone apply the brakes."

Debra Fleet, a counsellor at Bitterne Park School told the inquest she had seen Amber weekly between February and June last year and the child had never mentioned suicide.

In one text message, sent in August weeks before her death, Amber had told her that she wanted to "fade away" and was struggling with anxiety.

At the end of her evidence, Amber's mother, told Ms Fleet: "You could have helped her. My daughter's dead. You could have helped her."

Sarah Whitby, assistant deputy coroner, returned a narrative verdict. "There is not sufficient evidence that Amber intended the consequences of her actions to be the absolute ending of her life.

I bear in mind the maelstrom of life that teenagers go through, with conflicting emotions. Her intentions were unclear."

Bitterne Park School did not respond to requests for a comment.